1. Sublevel Blocks

2. Practice Prediction Problems Without looking at the table, give the group, period, and block in which the element with electron configuration [Xe]6s 2 is located In Group 2 (because of ns 2 ) In Period 6 (because n = 6) In s-block (because 6s 2 )

3. Practice Problem 2 Without looking, write configuration for Group 1 element in the third period. 1s 2 2s 2 2p 6 3s 1 Is this element more or less reactive than element in previous question (Group 2)? More reactive b/c alkali metals more reactive than alkaline earth metals

4. Practice #3 1. Without looking at table, give group, period, and block of element with configuration [Kr]5s 1 2.a.Without looking, write both the group configuration (ex. np 4 ) and electron configuration for Group 2 element in 4 th Period. b. Refer to table to identify element and write noble gas configuration c. How does reactivity of element compare with reactivity of element in Group 1 of same period?

5. Practice #4 1. [Kr] 5s 1 4d 5. Identify period, block, and group where this element is located. 2. Find period, block, group for configuration [Ar] 4s 2 3d 8 3. Write outer electron configuration for Group 12 element in 5 th period. 4. What is this element and write noble gas configuration.

6. Practice #5 Write outer electron configuration for Group 14 element in 2 nd period. Then name element and identify it as metal, nonmetal, or metalloid Write period, block, and group of element with configuration [Ar] 4s 2 3d 10 4p 3

7. Practice #6 Name block, group, and period of following configurations [Xe] 6s 1 4f 14 5d 9 [Ne]3s 2 3p 5 [Ne]3s 2 3p 6 [Xe]6s 2 4f 6